June 1, 2011, Los Angeles, Ca. — (L-R) #1 Contender Julio Cesar Chavez Jr., Culiacan, Mexico and female WBC super welterweight world champion Christy Martin of Orlando, Fla. pose during a press conference Wednesday in Los Angeles. Chavez Jr. will be fighting for his first world title against unbeaten WBC Middleweight Champion Sebastian Zbik of Germany and Martin goes for her landmark 50th career victory in a rematch against Dakota Stone . Zbik vs Chavez Jr. is promoted by Top Rank in association with Zanfer Promotions, Universum Media Network, Tecate and Staples Center and will take place on Saturday, June 4 at the Staples Center in Los Angeles and be televised on HBO Boxing After Dark. — Photo Credit : Chris Farina – Top Rank